GE Power
Variable Inlet Guide Vane
(VIGV)
Product Description
• Variable Inlet Air vanes help guide inlet airflow to maximize
engine performance.
• Assembly located in front of Low Pressure Compressor (LPC),
consisting of 43 stationary leading-edge vanes and variable
trailing flaps (rotate -10 to +60 degrees).
• Variable Differential Transformers (LVDTs) on actuator ring
drivetwin hydraulic actuators.
Temp. (F)
Power Increase
70
2.0%
80
5.8%
90
7.2%
100
11.5%
110
13.5%
Variable Inlet Guide Vanes Assembly
• LVDTs and VIGV positions are controlled by continuous
measurement of LPC inlet temperature and HPC discharge
static pressure.
• If turbine has Fixed Inlet Guide Vanes, the upgrade involves
adding VIGVs, Hydraulic Control Unit (if applicable), off-engine
Cables, hydraulic lines and updating the software.
Customer Value
• Increases generator power output by up to 3.25 MW.
• Improves performance for simple and heat recovery cycles at
less than full load; reduces engine waste heat.
• Minimizes variable bypass valve (VBV) flow and pressure levels,
thereby reducing associated flow noise.
For LM6000PC SPRINT Gas Turbine with EFS
• Average power increase of 2 MW.
• Greater than 2% fuel efficiency increase at 70% power.
• Exhaust energy increase of 3%.
• Flaps close during large power reductions to quickly reduce
LPC flow rate, helping maintain LPC stall margin.
Applicable Units
LM6000*
P
LM2500
LMS100
LM5000
LM1600
TM2500
* Configured for LM6000 PC units only
To learn more about this offering, contact your GE sales
representative or visit powergen.gepower.com.
Copyright ©2016 General Electric Company. All rights reserved.
(07/2016)
fact sheet